﻿// ===================================
// <copyright>LogoUI Co.</copyright>
// <author>Vlad Spivak</author>
// <email>mailto:vlads@logoui.co.il</email>
// <created>21/00/10</created>
// <lastedit>Sunday, November 21, 2010</lastedit>

// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the 'Software'), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
//
// <remarks>Part of this software based on various internet sources, mostly on the works
// of members of Wpf Disciples group http://wpfdisciples.wordpress.com/
// Also project may contain code from the frameworks: 
//        Nito 
//        OpenLightGroup
//        nRoute
// </remarks>
// ====================================================================================//


using System.Reflection;
using System.Windows;
using System.Windows.Interactivity;
using System.Windows.Media;

namespace LogoFX.Infra.Interactivity
{
    //todo:clarify usecase of this
    public class BindNamedPropertyBehavior : Behavior<FrameworkElement>
    {
        public string TargetProperty { get; set; }
        public string SourceProperty { get; set; }

        protected override void OnAttached()
        {
            base.OnAttached();
            AssociatedObject.Loaded += new RoutedEventHandler(AssociatedObject_Loaded);
        }
        protected override void OnDetaching()
        {
            base.OnDetaching();
            AssociatedObject.Loaded -= new RoutedEventHandler(AssociatedObject_Loaded);
        }
        void AssociatedObject_Loaded(object sender, RoutedEventArgs e)
        {
            SetPropertyBinding();
        }

        private void SetPropertyBinding()
        {
            DependencyObject currentElement = AssociatedObject;
            PropertyInfo sourceProperty = null;
            PropertyInfo targetProperty = AssociatedObject.GetType().GetProperty(TargetProperty);
            object currentSource = null;

            while (currentElement != null && sourceProperty == null)
            {
                currentSource = currentElement.GetValue(FrameworkElement.DataContextProperty);

                if (currentSource != null)
                    sourceProperty = currentSource.GetType().GetProperty(SourceProperty);

                //is have readable property
                if (sourceProperty == null || !sourceProperty.CanRead)
                {
                    currentElement = VisualTreeHelper.GetParent(currentElement);
                    sourceProperty = null;
                }
            }

        }

    }
}
